Fluid flow dual port control valve



Dec. 15, 1953 s. F. GRAZIANO 2,662,722

FLUID FLOW DUAL PORT CONTROL VALVE Filed Jan. 30, 1951 K a g VIII! {a 3 //5 W/ J m Z 50 7d 67 2/4 INVENTOR.

$4M ./-T seam/v0,

Patented Dec. 15, 1953 UNITED STATES PATENT OFFICE FLUID FLow DUAL PORT common VALVE sem F. Graziano, Tampa, Fla. Application January 30, 1951, Serial No. 21l8 639 1 clam.

This invention appertains to improvements in valves and particularly relates to improvements in valves for operative installation in dual fluid flow lines. v

The primary objects of this invention are to provide means for lockinga single rotary valve for two independentsupply or feed lines and two independent receiving lines in either of two operative positions and including a tapered seat for the valve and to provide means for raising the valvefrom the seat so that it can be rotated to selectively establish communication between the supply and receiving lines.

Another object or this invention is to provide a valve block to which two separate feed lines are connected for communication with a vertically tapered center valve seat formed at an acute angle therein and to which two independent receiving lines are connected in communication with the seat and to rotatably mount a valve in the seat, the valve being transversely formed with a pair of angular passages for selectively establishing a simultaneous communication between one of the feed lines and one of the receiving lines and between the other feed line and receiving line and the valve being received in the seat in a leak-proof manner with means formed on the seat -for raising the valve in an axial direction in order to enable the valve to be rotated.

Another object of this invention is to provide cam means formed on the bottom wall of the valve seat for engaging the valve and locking the valve in desired positions and for imparting an axial movement to the valve, upon initial rotative movement thereof, whereby 'thevalve is raised free from the locking action of the cammeans and may be freely rotated.

In the accompanying drawing:

Figure 1- is a top plan view with a part of the block broken away and shown in section; and Figure 2 is a longitudinal vertical Sectional view. 7

Referring now more particularly to the accompanying drawing, the valve block In is preferably rectangular in shape and is formed with a top wall i2, bottom wall 14 and side walls I6, I8, and 22. Inlet channels 24 and 25 are formed transversely in the block and extend through the walls 16 and It with the outer orifices of the channels being axially enlarged and internally threaded, as at 28 and 30, for the reception of the threaded ends of supply lines or conduits. The side walls 16 and I8 are opposed and the channels 24 and 25 are in axial alignment with their inner ends in communication with a tapered enlarged center recess or bore formed at acute angle vertically in the block and extending. through the top wall 12. I V

Channels or ports 34 and 3Bare transversely formed in the block in. the same plane as the channels and 23 andextend through the side walls 20 and 2.2 where their outer orifices 38 and ill are axially enlarged and threaded forth-leaded reception of the connecting terminals of receiving conduits, which are selectively communicable with the supply .lines.

A control valve 42 is provided and includes a.

irustro-conically shaped or tapered valve core 44 which is seated in the recess Stand is snugly received in engagement of the side walk thereof. Right angular oppositely extending passages -36 and 48 are formed transversely through the valve core and are of a diameter approximating the diameter of the inlet or supply channels and the outlet or receiving ports with which the passages are selectively registerable for controlling the communication therebetween; The ends .58

and 52 of thepassas'es 46 and. are aligned as are theends Stand 58 of the passages, with the ends 59 and 56 being at right angles and the ends 52' and 54 beingsimi-larly disposed.-

A valve stem 58 projects upwardly from the core 44, being formed integral therewith, and is formed at its upper terminal to accommodate either amanually operated actuator or power driven operator for rotatingthe core; A bellshaped housing '68 encompasses the stem and is provided-at its-lower or major open end with a lateral mounting flange 62 bolted by fasteners 64 to the top" wall of the block, with a gasket 6B interposed between the flange and top wall. The upper or minor end of the housing islope'n and is formed with a projecting collar 68in which the stem is rota-tably mounted and through which it is. axially *slidable, for a purpose to be described.

Within the housing 68, a" bellows or diaphragm.

it! is disposed, the bellows enclosing in loose {ash-- ion the stem 58 and being soldered at its upper end to the housing 50 concentric to the opening in the collar.

A bearing ring H is circumposed on the stem and the lower end thereof is polished and bears directly on the raised'fiat center portion of the upper end of the valve core, the end of the ring being polished and providing a fluid tight bearing surface on which the valve core rotatably engages. A lateral flange 12 projects outwardly from the upper end of the ring and the lower end of the bellows is seated thereon and suitably afllxed thereto, as by soldering T4. The flange 12 forms an abutment for the lower end of a coil spring l6, which concentrically encircles the stem and bears at its upper end against the underside of the upper end of the housing The spring functions to bias the valve core into the valve seat, with the flat minor end or bottom wall 18 of the valve core being slightly spaced from engagement with the hat bottom wall 83 of the valve seat, while the bellows ring ID cooperate to provide a fluid tight seal.

Located on the bottom wall 80 of the valve seat 32 in front of ach inlet channel and each outlet port and in right angular relationship on a circular arrangement are upstanding semispherical lugs or detents 82. The detents are adapted to cooperate with similarly configured recesses 84 formed in the bottom wall 18 of the core and disposed in spaced circumferential fashion on the bottom Wall and arranged at ninety degree intervals for locating the valve core in positions for locking the core in selected rotative positions and for initially lifting th valve core to a position for rotation.

In use, fluids are supplied to the inlet channels 24 and 26 from separate sources and by means of the communicating passages 46 and 48 (as illustrated in Figure 1), are received by receiving lines connected to the outlet ports 34 and 36 with the channel 24 communicating with the outlet port upper end of the valve stem, will effect a lifting :3

movement of the valve core from the seat. The lifting movement is occasioned by the camming action of the detents, which impart an axial upward movement of the valve core. Further rotation of the stem will turn the valve core, as the bottom wall thereof rides on the detents, until the recesses mate with the detents and drop thereon under the spring biasment of the valve core, which is lifted against the urgement of the spring 16. The core, in its rotative movement, engages th bearing ring, the latter being held against rotation, and the walls of the valve core are freed from frictional engagement of the side walls of the valve seat.

The detents and cooperative recesses serve to lock the valve core in a tight position in the seat and against accidental rotative movement, the detents and recesses cooperating with the spring 16. Also, the detents, being disposed in advance of the inlet and outlet lines function to locate the valve core and enable it to be positioned for any selective communication arrangement of the inlet and outlet lines.

Obviously, the system, described in the foregoing, could be changed and the inlets or outlets could be varied, as for example providing only one outlet and three inlets or the like diversed arrangement.

Having thus described this invention, what is claimed is:

In a valve for fluid flow lines, a block one face of which is flat and has a recess formed with a bottom wall spaced inwardly from said face, the recess having a side wall tapering in the direction of the bottom wall to provide a tapered valve seat, said block having inlet and outlet channels communicating with the recess through the side wall at locations spaced circumferentially thereof; a tapered, apertured valve core rotatable and axially shiftable in the seat, said core being rotatable to selected positions relative to the channels for controlling fluid flow therethrough and having a 2 smaller end spaced closely from the bottom wall;

a valve stem coaxial with the core and rigidly secured to the larger end thereof; a hollow bellshaped housing rigid at its larger end with the block and circumposed about the stem, the housing having an opening in its smaller end through which the stem projects and in which the stem is rotatable and axially shiftable; a bearing ring circumposed about the stem within the housing and having one face engaging the larger end of the core, the core being rotatable relative to the ring; a bellows circumposed about the stem and having end flanges formed thereon directed outwardly of, and sealably and fixedly secured to, said smaller end of the housing and ring respectively; a spring circumposed about the bellows and abutting at opposite ends against said flanges thereof, said spring being arranged to exert a continuous, yielding pressure toward and axially of the core to urge the core into said seat; a plurality of semispherically detents integrally formed on said bottom wall of the valve seat and projecting toward the smaller end of the core, said smaller end of the core having'circumferentially spaced, semispherical recesses equal in number to and releasably interengageable with the detents in selected, flow controlling positions to which the core is rotated, for retaining the core against movement from said positions, said detents being adapted, responsive to rotation of the core, to bias the core axially thereof against said spring pressure, whereby to permit rotatable movement of the core between said positions thereof.

SAM F. GRAZIANO.

References Cited in the flle of this patent UNITED STATES PATENTS Number Name Date 1,484,378 Nell Feb. 19, 1924 1,558,979 Guillery Oct. 27, 1925 1,563,093 Lawson Nov. 24, 1925 1,718,530 Cook June 25, 1929 1,965,069 Cramer July 3, 1934 2,127,679 Dudley Aug. 23, 1938 2,229,932 Parker Jan. 28, 1941 9, 2 McIntosh Apr. 6, 1948 2,488,283 Franck Nov. 15, 1949 

